Machine for forming knotted-thread fastenings.



l PATENTBYD JUNE 25, 1007 C. M. NORTON,

MACHINE POR PORMINNNNOTTND THREAD PASTENINGS.

SSHEE'rs-SHNLT L APPLICATION FILED 0CT.3.1904.

NNN@

PATENTED JUNE 25, 1907 C. M'. HORTON. .MACHINE PORTURMIN'G KNoTTBD-,THRBAD PASTE-mms.

-APPLIOATION FLED OGIHB. 1004 e SHEETS-SHUT g.

M w .al MM.

l @i 771,. mi:

zz-maar PATENTED JUNE 25, N07

- 02M. HORTON. MACHINE PORFORMING KNOTTBD THREAD FASTBNINGS.

.PATENTED JUNE 25, NGT

l C. M. HOE-TLN. MACH'INB FOR'FORMING KNOTTED THRBAUFASTENINGS.

6 SHEETS- S11-ELI" 4 APPLICATION PNUD OUF. 3. N104.

C. M. HORTON.

PATBNTBD-JUNB 95, 190'/ APPLCTION'YILBDOGT.3.1904.

5 SHEETS-SHEET 5.

Cl-IARLES M. ilOR'lOil, OF PORTSMOUTH, NEW HAMPSHIRE, tSSli'lXlt 'lll THE SINGER MANUFACTURLNG CGdiPANY, A CORPORATIUN Ulf JE SlmY.

bl EW Specification of Letters Patent.

Patented June 25, l 907.

Application filed October 3, .1.964. Serial No. 226,954.

Be it known that I, CHARLES M. Hoeren, of Por smouth, in the county of Rockingham and State of New Hanipsl'iire, have inven Led certain new and useful Improvements in Machines for Forming Knotted-Thread l `asteiiir1gs, of which the following is a. speciiication.

. This invention relates to machines which secure together separate articles by means of knotted thread fastenings which consist of loops of thread or string passed through or around portions of the article, the ends ol' which are tied together to securely hold the saine, and consists essentially of a machine having means suf-h as a needle ior carrying a thread or string through and around portions of the articles to be connected, lmet-tying lingers adapted to rip the loose end ol` the iln'ead or string and; carr3v it through a bight or loop in the thread pulling it tight to forni a knot, and a cut-tor for severing thethread after the linot has heen tied.

l'n this application the devices which constitute my invention are shown and described as being applied to a machine for sewing huttons to cards, hut it is to he understood that they can as Well he used with any other niachine which performs a similar class ol work, for instance, to a machine adapted to pass a string through opposite eyelet-lioles of an un lasted shoe upper and tie the ends of the string together to forma single fastening for holding the ilji1A of the upper closed during'thc process of lasting, that here employed having heen chosen simplj,r ier convenience of illustration, as wil h such a machine the construction and operation -oi my lirici-forming and' tying devices can most easily loe demonstrai'ed.

Ol' the accompanying drawings-Figure l represents a sido elevation, Fig. 2 represents l'ront elevation, Fig. 3 represents a section on line oi' llig. l, Fig. i represents a posite side elevations olE the same. Fig. 9 represents a view similar to Fig. 7 but sho iving the paris in a diilerent position. Fig. l() represents a. perspective view showing the presser ioo'land thread-cutter. Fig. ll represents a sectional plan vien' taken on line .l1- 3l oi: li'ig. 7. Fi l2 represents a sectional view on line 12- z oi' Fig. Fig. 13 represents a vertical section oi the lniiieblock. Figs. riand l5 represent perspective views oi the durend-cutting knife and bottom plate oll the presser-foot respectively. Fig. lo represents a plan vien,l Fig. l?" represents ai vertical section, and Fig. 1S represents a horizontal section on line 'lts-1S of Fig. l, of the gripping members which constitute the looping and tying devices and actuating mechanism therefor. F ig. i9 represents a rear elevation of the tvvo gripping inemhers. Fig. 2O represents a vertical section al view of one of said nieinhers, and Fig. 2l represents a` similar View of the other member. Fig. 32 represents in perspective the detailed parts of the gripping member shown in Fig. 2l, and Fig. 23 is a Similar view illustrating the member shown in Fig. 20. Fig." 2li represents a viront elevation oi' the cani which laterally operates said gripping members. Fig. 25 represents a similar view showing the gripping member actuating hars in position relatively to the cani. Fig. 2-6 represents a perspective. detail view ol' the ineinber by which the lingers of the gripping inemloers are separated. Figs. 27 to 43 inclusive represent views showing the various pesi: ions occupied hy the. lmet-tying devices during the operation of forming a knot, and the various stages oi the knot, Fig. 43 showing the knot completed and the button secured to the card.

The same reference characters indicate the same parts in all the figures.

The machine illustrated in the drawings comprises a frame l having a head portion i2 in vfhich the needle-operating mechanism is contained.. The needle 3 is carried by a4 needle-bar 4 which is cansedto reciprocate verticalljr in guide-ways carried by' au oscillatoryy frame 5 j ourn aled on hearing-screws. 6. The needle-bar and needle are reoiprocatcd vertically from the niain drive sha-ft 7 through the 'bevel gears S 9, sha-llt l0, bevel gears 1l. 12, and horizontal shaft 13 which carries a crank member 14 connected by link 15 with the needle-bar in the manner usual with machines for sewing buttons. The [rame 5 which carries the guides for the needle-bar is oscillated to move the needle laterally by means of an arm 16 rigid with the frame and a link 17 pivoted at one end to the bar 16 and adjustably connected at its other end Kwith alink or arm 18 pivoted at 19 to the frame and having a stud 2O which engages the groove 21 of a cam 22 which is mounted to rotate on the frame of the machine and provided with a bevel gear portion 23 in mesh with a bevel gear 24 carried by the shaft 13 through which it receives its motion. As the connection between the link 17 and arm 1S is shifted toward or away from the ivot 19 the lateral throw of the oscillating ame 5 is diminished or increased, where.- by the lateral feed of the needle may be adjusted to suit work of varied character.

l/Vhile the present improvement is herein represented as embodied in that class of sewing machines having a reciprocatin needlebar mounted in a laterally 'moving ame, it is evident that the relative lateral movement between the needle and the work may be produced by any suitable or well-known means to enable the needle to pass loops of needle-thread first through one point and then through another point in the Work spaced therefrom in order that the thread 'may embrace a portion of the material to 'be inelosed by the knotted stitch.

The shaft 13 is designed to rotate at a uniiomi speed, thereby reciprocating the needle regularly while the relation between the gears 23 and 24 and the shape of the camgroove 21 is such that the needle is held in one position, that is the first position in the cycle of operations by which a complete fastening,r is tormed, while it is caused to make one reciprocation and is then shifted laterally to its second position and there held while two additional reciprocations are made. During these two reciprocations in the second position the knot-forming devices hereinafter described are operated to form two knots or half bitches in the thread to secure the lends of thc fastening together, after which the thread is cut off and the needle rcturned to its lirst position to repeat the operations on a new piece. ol work.

The maphine is provided with a presserbar 25 which carries a presser-foot 26 and is reciprocated vertically in the manner usual in machines of this character to alternately.

bear upon and release the work supported on the table 27. The presser-foot carries a knife which is operated by mechanism which will now be described to cut oil the thread at the conclusion of each cycle ot knot-tying operations, the said mechanism being shownin Figs. 1 and 5, and details thereof in Figs. 6 to 15 inclusive.

The bottoni of' the presser-foot 2(3 is provided with-wi.v horizontal plate '2T which is adapted to bear upon the work and is loi-mcd with a slot 28 through which thc nccdlc carrying the. thread is adapted to pass, one ol' the edges of which is sharpened and is adapted vto coact with the` knife 29 to shear oll' thc thread at the proper time. On the presserfootrisiiorlncd a guide 3() in which is mounted a knife-block "31 to which the knife 29 is connec-ted. The block and knife are reciprocated by means of a lever 32 having a stud 33 which engages a slot in the knife-block and causes the latter to move in the guide 3U when the lever 32 is oscillatcd. The said lever is pivoted at 33 to a block 34 which is connected to and carried by the presser-bar 25 and is provided with a cam-slot 35. A bell-crank-lever 36 is also carried by the bar 25 by means ot' a pivotal cmlncction 37 to a block 38 mounted on the bar. The bellcrank has a stud 39 which projects into the cam-slot 35 and has a pivotal connection at 40 with a link 41 which is pivoted to the bellcrank lever 42 mounted on a pivotal bearing 43 in the machine-frame. The lever 42 has on one of its arms a stud 44 which is engaged with a groove 45 in the cam-disk 46, which disk is rotatably mounted on the machineframe and rotated by the bevel gear 24 meshino with a gear 47 connected to the cam-disk.

he upper portion of the cam-slot 35 is. curved concentrically with the pivot 37 so that when the bell-crank 36 is operated to move the stud 39 from the position shown in Fig. 9, upwardly the lever 32 is not operated thereby, but the lower portion of the slot 35 is eccentric to the pivot and thercbythe motionl ol the stud 39 from the ositien shown in Fig. 9 tothat ol Figs. 5 an( 7 operates lever 32 to advance the knife across the slot 28 and shear oil'` the thread. The circular upper portion ol" the slot 35 permits the bell-crank 36 to have considerable latitude of movement for a purpose Vhereinafter described, without actuating the lever 32.

The upper end of the vertical arm of bellcrank 3G is provided with a thread-guide 48 which is located between and in proximity to a guide. 49 on a lever 50 and a guide 51 fixed on the head of the machine, The course of the thread is from the spool 52, through a guide 53, about a tension' device 54, through an eye in the take-up lever 55, thence through the guides 49 48 51, a second fixed guide 56, and a thread-clamp to the eye ol the needle 3. The tension device and take-up are of the usual form and need not be particularly described here, as they do not forni any part ol inv present invention.

The function of the guide 48 carried by the bell-crank 313 is to measure oli' enough thread at the conclusion of each cycle of fastenerlorxningoperations to provide a sullicient supply to begin thc next knot-forming operation. For this purpose the guide 4S is moved away from the guides 4l) and 5l during the past the tension device.

upward movement ol' the needle in the linal operation to draw a certain amount ol thread This motion produced by the oll'set part 57 'lot the cam-groove i which causes thc upper arm ol'v the belle 4ank 42 to be moved downward and the 'lower arm to be moved forward, thus adv conclusion of the last stroke of the needle in l has begun to descend to form a new tasten-l 2 5 ing the cycle of operations and before the needle the knife is carried by the presser-foot .and occupies the same relation to the needle that the presser-foot does, it is evident that its distance from the upward limit of the motion of the needle will vary according to the thickness of the Work acted upon and that therefore `the len th of the thread cut oli' will 'vary similarly. n order to insure that the amount of slack thread furnished to the needle at the beginning of each series of operationsis the saine, regardless of the thickness of the work operated on, the lever 5() before referred to is provided for coacting with the bell-crank 3o in measuring oill the supply of thread. This lever 5() is pivoted at 59 to the machine-head and is provided with an arm 6() having a beveled portion adapted to be engaged by the block 35 when the presser-bar is raised. Thus when material of consider-- able thickness is beneath the presser-toot, the block 38 is engaged with the arm 6() and the thread-guide 49 carried by the lever 5() is moved rearwardly7 and conversely, when v-worh ol'v less thickness acted on the `guide 49 is moved toward; thus the distance kwhich the guide. 42% is caused to move from the guide llt) during the threatl-measuring operation of the bell-crank o' is caused to vary according; to the thickness of the worl; aiidmore thread is drawn from rthe tension device when the presser-toot is elevated than when. it is depressed.

At the last rcciproeation oll he needle after one knot'has been lied and Jabe needle has begun 'to descend on its linal rcciprocation to tiethe second knot, there is liability ot the thread hecomine looped loosely around the needle7 `which will prevent the crmaion ot' the knot, for it is necessary that the thread should draw in the right direction from the needle in order that the knot may be properly formed. To prevent this fouling of the needle I provide a clamp which holds the thread taut during the beginning ot the final descent of the needle and until it enters the work. This clamp consists ol" a stationary member GQ'mounted on the head of the Inachine and a movable .member 63 which is ada )ted to coperatie with the fixed member to clamp the thread, between which member the thread is guided. The movable member comprises a rod 64 having its forward end bent to form the clamp member 63 and is acted upon by a spring` G5 which bears against a collar on the rod and an abutment on the machine-head' to cause the movable clamp to engage the fixed clam The rod 64 is connected to one. arm ot a ever 66 ivoted to the frame., the other arm of w'iich rests against the surface of the earn 22 and is held in contact therewith by the pressure ci the spring 65. The cam normally holds the lever 66 in such a position that the fclainp members are retained out of engagement and is provided with depressions 67 and 68 which are so located as to permit the clamp 63 to be moved by the springT to engage the thread at the proper times. cornes into engagement with the lever 66 at the. beginning ol' the last descent ot the needle and allows the clamp to grip the thread and hold it until the needle enters the Work, after which the thread is released and is allowed to be drawn out bythe needle, and 'the other depression o erates the lever to cause the thread to be c ainped at the end of the knol-forming series of operations after the. bell-crank 3b has measured oil vtheisupply ot thread and while the knife is cutting the thread, in order to hold the thread taut and insure the severing thereof.

Below the work-table Z7 are mounted knot-tyingr devicesl'which engage the thread l'ed through the 'work by the needle and are manipulated to' liorm knots. These devices comprise a pair ol" g1ipping members 7l 72 which are pivoted in a holder 73. The gripping'- incinber 7l has pivoted to it' nipper 74 and the member 72 carries a pivoted nipper 75. The @gripping portions of the members 7l and 7lv are slotted to torni a plurality of lingers or jaws which hold the thread so that it extends across the slot and the gripping parts ol the member 72 and ni per 75 are shaped so that they can enter tie seid slot and engage the thread carried by the meniber Tl and extending across the slot. The

` gripping members 7l and72 are mounted ccax'ia, ly in any desired manner, the construe- 'tion here illustrated consisting of a sleeve carried by the member 72 and journaled m the holder 73, and a pin 76 'formed on the member 71- and lournaled in the. interior of the sleeve., these parts being `held in position by a stud 77 screwed into the One of these depressions Y .ping members about the axis 8S.

fr sensei pin 76 and extending over the end of the bearing in thc holder. Arms 7S '.79 are similarly mounted in a fixed bearing Si) formed in u portion ot the traine of the machine and these arms are provided with lugs or tenons turning about an axis which is substantiallyperpendicular to the axis` about which the pripping members are moved, wherebythe atter are adapt-ed to be moved in all directions. The cam-groove 8) formed in a cam 90 on the shaft 7 operates a stud 91 carried bya rock-arm 92 and connected to a rockarm 93. mounted on the holder 73 through a4 link 94 to oscillate the holder and the grip- The nippers 74 and are operated alternately to cause irst one and then the other to grip and release the thread by means of a rod 95 which is mounted for reciprocating motion in a guide-way formed in the center of the bearing 8() and is operated by a cam-groove 96 on the cam 90. The rod 95 carries pro- 'Aections 97' which engage projecting arms 'ormed on the nippers 74 and 75 on opposite sides thereof, whereby when the rod is -moved toward the right, reference being had to Figs. 17 and 18, the nipper 74.is caused to open and when moved to the left the Dipper is opened.

The operation of the knot-tying devices will now be ilescribed, reference being had to Figs. 274 to 43 inclusive: At the beginning of each series of operations by which afastening is formed, the needle and grippinglmemhers occupy the position shown in Figs. 27,

28 and 39. As the needle advances and projects through the work, the gripping member 71 is advanced into the path thereof and the nip eri/4 is opened so that the main portion of t 1e gripping member and the ni per'are on opposite sides of the needle. As t e needleis retract-ed the nip er is operated to grip the end of the thread) left by the needle below the Work in the manner shown in Fig. 33, the nipping of the needle-thread beine' delayed until the needle has risen entirelyT a ove the work and the initial loop of thread has been drawn-up through 'the lingers or Jaws ot' the nipping and loop-taking member 71. 74 sufficiently' to leave only a short end of thread beneath-the Work suitable for passing through the subsequently formed needle loops of the same stitch-forming cycle. The needle is then shifted laterally by the nicchanism previously described and is again advanced through the work in its second position, the gripping member having been shiftedt-o one side of the needle as shown in Fig. 34. As the needle starts to rise again it forms a loop of thread beside the gripper and the latter is then operated by the cams described, to move` 'first to the left, then toward the rear and toward the right again to advance the end ofthe thread held by it around the needle and through the loop, this-operation being shmvnpin Fig. 35. [it this point the second gri pping member 7 2 is caused to advancel and its tlnead-engaging portions are moved into the slots oi' the correspond ing parts of the member 72 and are then operated to grip the thread, the member 72 being caused at thcsame time to release the thread; 1he member T2 then backs oil' as the needle rises and pulls the thread taut to iorm e. knot as shown in Fig. 37, the knot being more clearly shown on an enlarged scale in Fig. 38. These operations lernt one hall'- hitch and it is necessary to form another hitch inlorder to retain the fastening. this purpose 'the gripping .member 71 is again advanced and caused to take thc end held by the member 72 from thc latter. The needle is 'then caused to descend again in the same place and the identical operations above described are repeated, forming the knot shown in Figs, `i2 and 43.

As above described, the lower threadhandling devices comprise a (lucani-nipping and loop-taking member Tl .74 which alone cooperates directly with thc needle in receiving the thread-lowsv passcd through the work by the latter, and a thrcinl-nipping holding device consisting of themcmbcr 72 T5 "'wliicli cooperates merely with the loop-taking member in holding the thread-end while such member reccdes from the thread-loops through which it nasses the thread-end. lt will also be seen that 'as above described the thread-end is assed successively through different threat -loops in the same direction to reduce a pparticular form oi luiot. it is several actuating cams will determine the .direction and timing of the'operative movement-s of each of these thread-nippingmembers and the character of their cooperation with the needle and the consequent nature of the knot produced. Thus, were the threadend to be passedthrough the loops presented by the needle alternately by the diiferent thread-nip )ing members, a knot of diil'erent character than that produced by the mode of operation hereinbcfore described, as represented in Fig. 43, would be produced.

According to the present improvement, in its preferred form, the thread-nipping members receive their operative or thread-engaging movements in parallel planes, while they receive lateral positioning movements co1'- respondingr with those ol' thc needle in directions transversely otsuch operative moveobvious, however, that the character of the ments; thus ii'isuring the comparative sim- For i IOO plieity ot the mechanism in construction and arrangenu nt" and certainty of coi'uieration ot the members hetween which the thread is successire vf'pussed in thc cycle of operation ot the machine.

lt is evi dent that these knot-tyingr devices are not 'restricted for use with a :sewing-machine and that other iustrumentnhties than a needle might he used ior advancing the l thread through. the work, as any device haying means toguidc it thread orstring andhai'- i ng sul'licient rigidity to carry the same i'orwa-rd might he employed. I therefore do not wish to limit my claims to mechanism in g which a needle is employed, hut desire to include my structure provided with n suitable thread-carrier having the necessary qualities referred to.

I claims- 1. .ln a machine for making knotted tlrread-tastenings, in combination, n reciprocating thread-minier adapted to pass threadloo'ps through the work, actuating means for imparting to .said threadcarrier in each knot-forming cycle :in initial reciprocation and :t plurality of subsequent reciprocations,

means ttor producing a. relative lateral movement between the tlneiul-earrier and the work, means for actuating the same once -only lior each knot-forming cycle, and means forV passing the end ol'A an initial thread-loop through each of the subsequent thread-loops of' a cyle.

2. In imac-hintfor making knotted threadiiast-eniugs, in combination, n reciprocating thread-turnier adapted to pass thread-loops through the work', actuating means i'or imparting to said thread-carrier in each knotformingV cycle an initial reciproczttion and n. plurality ot subsequent reciprocations, means tor producinga relative. lateral movement between the tlue-ad-earrier :ind the worky` means ior actuating the same once only for each knot-forinin;r cycle, und means for passing the end of an initial thread-loop through each ot' the subsequent; thread-loops of n cycle in the saine direction I. ln n machine l'or making knotted thread-i stenings. in combination, a reciprocating thread-carrier adapted to pass threadloops through the work, actuating` menus for imparting a. succession oli recipromitious to said thread-carricr in each kuot-l nmin;r cycle, :t tlti .a l-iii|,\pi'|ig loop-taker :tdztpted to cooperate with said thread-carrier in handling the thiczul-loops`r means i'or actuating said, loop-taker to nip the threud ol" thtI lirstv loop l'oinud hy the thread-carrier and to pass it through u suhserutent thread-loop, and Iii-ans coi'mcratiug with said loop-inkel' in completing the thread-fastening.

1. ln a unufhinc l'or makingr knotted thread-instellings, in combination, ay reciprocating' threatl-carrier adapted to pass the *Minid-loops through thc work, actuating l means tor imparting a succession ct' recipro- J cations to said thread-tnrrier in eut-h knoti torniing cycle. a thread-nipping loop-taker zirlnpted to cot'iperate with said thrczul-curt rior in handlingy the thrcad-lo'n;., actuating means for said loop-taker acting initially to cause the same to nip the thread ot the lirstA t loop presented thereto by the ihrend-carrier nlter the hitter lnts risen above thevtork und i to pass it through a. subsequent thread-loop7 75 and means cot'iperating with said loop-takin' in completing the thread-fastening.

5. ln n machine for making knotted tliread-fnstenings, in combination. a reciprocating thread-carrier adapted i i pass the thread-loops through the work, actuating means for imparting n, suclccssitm ot reciprocations to said titrend-carrier in each knotforming cycle, a thread-nipping loop-taker adapted to cooperate with said thread-earrior in. handling the thread-loops, zt threadholding device7 and means for actuating said thread-nipping and holding members whereby the nipping member is cruised to seize and nip the end of tht` thread oiE the initial threadloop of n knot-forming cycle und pass it through a second thread-loop to the holding member, the holding` member to retain such. thread while the nipping 'member recedes from the second thread-loop and advances to 95 grasp the thread-end, the nippingl member to then pass said thread-end through n third thread-loop to the holding member by v'which it is retained, and the nipping member to* nally recede trom the third thread-loop to roo permit the knot to be set.

6. In a machine for making knotted thread-fastenings, 1n combination, a recipro- 'cnting thread -czirrier for passing threadloops through the work, a coipcrating loop-l x05 taker having a henk formed with relatively movable jaws, means ior actuating seid iooptaker whereby one` (hrend-loop is entered by one jaw only oil the loop-taker which is operated to nip the same, and a, succeeding loop iro is entered by both jaws of said loop-taker, and means co ")peratingr with suid loop-taker in cmupleting the thread-fastening.

7. ln u, machine lor making knotted thread-fastcniugs, in combination, e recipro- 1 15 eating thread-carrier tor passing threadloops lthrough the work, a cooperating lootaker having a henk lormed with relatively movable jaws, means -l`or imparting to said loop-hiker an operative loop-taking move- 1.20 nientl lor cnch reeiprocntion of the threadcarrier, independent means for operating said jaws whereby one only of the latter is 'caused to enter one thread-loop upon which tht` other jew is then closed and both jaws to 125 enter n subsequent'thread-looland means cooperating with said loop-taker in completing the. threatl-lasteuings.

S. 'in a machine. i'or making knotted stitches, ther combination with means for 13o passingr the thread around a portion of the `material and forming a succession of threadloops at the saine point on one side of the. portion so embraced, of means for passing through each ot' said thread-loops the end ol' the thread from thel opposite si( e oi said cinbraced portion ol` thc material, and means for drawing up the thread to complete the knotted stitch.

S). A machine for making knotted fastenings comprising a thread-carrier, means for reciprocating the same longitudinally and laterally, knot-tying devices comprising a, pair of gripping members, means for siniultaneously moving said gripping members laterally in one direction, means for moving said gripping members toward and away from 4each other m a direction transverse to the -irst-said motion, means for causing said gripping members alternately to grip and release a portion of the thread, and a cutter arranged to sever the thread on the completion of a cycle of knot-tying operations.

10. A machine for makl ig knotted fastenings for connecting parts, comprising a lateialiy and longitudinally movable thread-carrier constructed and arranged to carry a thread around portions of the work, and knot-tying devices comprising two laterally 'movable gripping members, means for actuatin r one of said members to grip a loose end of tihread extending from the carrier and carry it around saitV carrier and through a loop formed in the thread by said carrier, means for moving the second of said gripping members toward and away from said iirst gripping member, and means to cause Said secondl grip in r member to engagetbe end of thread heli by the iirst gripping member.

1 1. A machine for making knotted fastenings for connecting parts comprising a threadcarrier, means for reciprocating saidcarrier longitudinally and laterally, andknot--tying devices comprising a pair of gripping members, means for simultaneously moving said gripping members laterally in one direction, means for moving said gri )ping members toward and away from eacli other in a direction transverse to their first 'said motion, and means for causing said-gripping members alternately to grip and release a portion of the thread, whereby said members are caused to carry an end oithread partially around the carrier and draw the same through a loop in the thread formed by the retraction of the carrier.

12. In a machine of the character specified, knot-tyin instrumentalities comprising gripping inem ers each having a nipperpivote thereto, a cam having engaging surfaces arranged to act on said members to move them toward and. away from each other, a second cam connected to said members 'to kmove them transversely to their first motion, a reciprocating member having means for engaging the lingers of said gri ping members and arranged to separate the ingers of one of said members in its movement in one direction and to se iti-rate the fingers of the other of said memliers in its movement in the opposite direction, and means for actuating said reciprocating member.

13. lu a machine of the character specified, a holder journalcd in the frame of the machine, a )air of knot-'tying gripping members journaleil in said. holder, a nipper pivotally mounted on each of said gripping member-s and arranged to coact with said members to grip a thread, arms journaled in ixed bearings in alinemcnt with the journal of the gripping members and each engaged with one oi the gripping members, a cam having means for engaging said arms and moving them, and thereby the gripping members toward and from each other, a second cam, connections between said cam and the holder niierebyrthe latter is oscillated about its journal, and means for operating the nippers alternately. v

14. ln a machine of the character specified, a holder journaled in a iixed bearing in the frame ot the machine, gripping members journaled in a bearing in said holder perpendiculai to the bearing for the holder, nippers carried by said gripping members and pivotally connected thereto, cam surfaces having connections with said gripping members and arranged to move the latter toward and away from each other, a cam connected to the holder and arranged to oscillare said holder in its bearing, a reciprocating rod having 'projections located and arranged to engage the nipper carried by one ot the gripping members in its forward movement and to engage the nipper carried by the other of said gripping members on its backward reciprocation, and means for reciprocating said rod.

15. Amachine of the character stated comprising a needle-bar, a needle carried thereby, means adapted to reciprocate said needlebar at a uniform speed, a cam connected to said needle-bar to shift the same laterally and arranged to hold the bar in one position vwhile the latter makes one reoiprocaton.

then to shift thebar and hold it in the seconc position whileit ,makes two subsequent re- 'ciprocations, the `'aforesaid motions constitutin the cycle of operations in forming a IOO TOS

comp ete knotted fastening, and knot-tying devices comprising a gripping member, operating means therefor arranged to hold said member in the path of the needle during the first 'reciprocation thereof and j. cause lsaid member to ripthe end-ot` .a thread carried by theneed e, then to move-said member to o ne side olf the path of thel needle and partially around the needle during the second reciprocation thereof, a second gripping member. and operatingr meehanism therefor arranged to adranee the latter to the lirst grippingr menther while the needle is rontmeneintf the return stroke of its seeond reeiproeation and eause said see-ond memher to grip the thread-end earried hy the tirst' memher and dran' the thread through a loop 'formed in the thread while the needle is heine: retraeted, and then to deliver the threadend to the tirs-t gripping member. said opel'- atiner mechanism being further e-onstrueted and arranged to eause the said gripping members to repeat the al)ove-ment.ioned eyele ol operations during the third reciproeation of the needle.

lo. A machine for making knotted een neetions, eotnprising a work support` a thread-carrier and a plurality of eoperating -ripping` members all adapted for rrlatire operative movement in parallel planes'and positioningr movements transversely thereof, and operating mechanism for passingv` the earrier and a thread through seperated points in the work, and for causing the, grip ping,r memoers to carry one portion of the thread through a loop in the lthread passed through the work by the earrier.

1T. `l n ay machine of the character specitied haringr a needle and knot-tying devices e0mprisiiuf` a. tln'ead-nipping loop-taker and arranged to perl'orm a eyele of knot-tying oper ations, a take-np normally acting to set the knots, and means auxiliary thereto for proridingA at the end of each knot-tying eyele a measured supply of thread for beginning the nestV knot- AForming operation, Comprising relatireli' stationary thread-guides, the position ot' one of which is determined h r' the eltararter oi the work, a relatively mot'able thread-guide, and means for shifting the movable guide in respect' ot the relatively s..dionar-\' `guides to draw thread from the thread supply.

1R. A machine of the character speeied eomprisingr a thread-Carrier, means for longitudinally reoiproeat-ittg said Carrier, means vfor shiftingr the Carrier laterally, said means heing arranged to canse the earrier to make one reeiprtnation. then to shift. tlte carrier and eause the earrier to make a. pluralityv of reeiproeations in its seoond position, threadengagingr means eoperatiner with said threadearrier in lorrniner a fastening. thread-guides, a thread-riatup. and means i'or operating said f-lam ;to `rip the thread duringr the firsty portion ol he mtwetnent ol the earrier in the third reeiprtnation ol the rjrtle,

ttt. ln a maehine for making knotted stitehes. the eomhination with a longitudinali) te-ipt'oeatittg; thread rat'tiwy and a. .rorl\'-so.;port and means t'orlprodnein;r relative lateral motetnents'ot the one with referent-e tio the other n'hereh)r the tltreadrarrier (anar-d in the eyele o'l'` opera-tionot the ntaehinev to malte a single rgeipg-erntion in I one position. and two sueeessive reeiproeations in another position in res )eet of the work support. eomplentental ltttot -t'ying means eooperatinpr ,with said thread-carrier in formingy knotted stitehes-and a threadeutting derive, olB a normally-open thread elamp.- and neans i'orl actuating the same to Arip the thread duringr the irst portion of the earrier's morement in its third reeiproeation and again' during` the operation of said threadeutting deviee in euttinn` the thread.

2t). A maehi-ne ol the eliaraeter speciied having' instrtnnentalities adapted toe-anse a eyele of knot-tying operations, means for eutting the thread on the completion of the eyele eotnprising a knife, a guide in which said knife movahlyY mounted adjacent the work, and 'netuatiner mechanism therefor comprising a pivoted lever operatively connected thereto and irovided with a com sur tare, a lever pi Votetl to the machine-frame in engagement with said eatn surfaee, and mechanism'. eonneeled to oseillate said second lever.

21. In si ntaehine for making detached knotted thread fastenings, a carrier eonstructed and arranged to earry a thread-end through the work and to earry a loop of thread around afportion thereof, knot-tying gripping menthers arranged to grasp the thread-end and pertorm a series ot knot'- formingoperations, n. rut ter for severing the thread at the eonelusion ot one series of knot-tying operations` a thread-supplyinzgr deviee for furnishing' at the eone-lusion of one series of operations a stn'iieientl supply of thread to begin the next knot.tying operation, and means Vtor operatmtr said cutter and thread-snpplying deriee. arranged to o erate tirst the supplyingr derive and immet iately thereafter the cutter.

22. In a maehine t'or making lettre-het knotted thread tasteltinqs. a earrier con strueted and arranged to earr)Y a thread-end through the work and to earry a loop of thread around a port-ion thereof, knot-tying gripping memhers arranged to `grasp the thread-end and perform a'. series ot knotforntiner operations, a etttter 't'or severing the thread at the eonelusion of one series ot' ltnot.-t \ing operations, a thread-supplying devfre l'or furnishing at the eonehxsion ot' one `series ot operations a sttliieient suppl)v of thread to hegin the next` knot-tying opera.-

tion. meatzstor o ieratin(r said thread-su r l |2` n plint;r dertre to draw oil a sttpplr ot' thread..

and eonnet-tions hetn'een said supplying derire and entter whereinY the latter is actuated to sever the thread h) the supplying deviee at the eonrlusion ot" thel operative movement ot said device.

ICO

ITO

2 A mat-hineot" the t'haraeter speeilied a throad guide, connections between the cutengaged by sx1-irl ter und lc\c.r\\'l1oruby the former is operated by the lutiur, and menus for moving the lc- Yer nt. the cum-lusiou of' auch cycle to draw thread 'frmu the supply 4and sever the thread.

24. A machine of the character specilvd comprising instrumentalitivs adapted to cause :1 cyclo of knot-tying Operations, acut- 'ter for severing the thread, a lever having u thread guide and n. projection, au arm connected wlth the cut-tur lun/111g n. cum surface rojec-tion, whereby tlu'l cutter is operated lly the lever, nml menus for moving the lever at the Conclusinu ol' each cycle to draw thread from the supply Aand sever the tlu'ezul.

In testimony whereof I Ahave ullxud my signature, in presence nf two witnesses.

l* CHARLES M. NORTON. Witnesses:

Plump H. STARK, FRANK Il. Down. 

